Home / 190,943.70-286,307.55-72,618.90

Finding the Fourth Proportional to 190,943.70, 286,307.55 and 72,618.90

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Solution

The fourth proportional to 190,943.70, 286,307.55 and 72,618.90 is: 108,887.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,943.70 : 286,307.55 = 72,618.90 : x
  2. Step 2: Convert to fraction form
    190,943.70/286,307.55 = 72,618.90/x
  3. Step 3: Cross multiply
    190,943.70x = 286,307.55 × 72,618.90
  4. Step 4: Simplify right side
    190,943.70x = 20,791,339,342.70
  5. Step 5: Solve for x
    x = 20,791,339,342.70/190,943.70
  6. Step 6: Final answer
    x = 108,887.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.